An Organic Transistor-based Electrical Assay for Copper(II) in Water

被引：14
|
作者：
Sasaki, Yui [1 ,2 ]
Minami, Tsuyoshi [1 ]
Minamiki, Tsukuru [1 ]
Tokito, Shizuo [2 ]
机构：
[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, 4-6-1 Komaba, Tokyo 1538505, Japan
[2] Yamagata Univ, Res Ctr Organ Elect, 4-3-16 Jonan, Yonezawa, Yamagata 9928510, Japan
来源：
ELECTROCHEMISTRY | 2017年 / 85卷 / 12期
关键词：
Organic Transistors; Self-assembled Monolayers; Cation Recognition; Metal Ion Sensors; HISTIDINE-TAGGED PROTEINS; SELF-ASSEMBLED MONOLAYER; FIELD-EFFECT TRANSISTOR; NITRILOTRIACETIC ACID; BINDING; ELECTRODE; SENSOR; IMMOBILIZATION; COMPLEXES; CADMIUM;
D O I：
10.5796/electrochemistry.85.775
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
We herein report an electrical assay for copper(II) (Cu2+) utilizing an organic thin-film transistor (TFT). To endow the metal ion recognition ability, the extended-gate portion in the organic TFT is functionalized by a nitrilotriacetic acid (NTA)-terminated monolayer. As a result, the device responds selectively to Cu2+ in aqueous media. Importantly, the estimated detection limit for Cu2+ (= 96 ppb) is much lower than environmental standard value of a copper contaminant in drinking water. Its superior processability and portability in the organic device indicate that the proposed assay could be applied for on-site detection of the Cu2+ ion without large-sized equipment. (C) The Electrochemical Society of Japan, All rights reserved.
引用
收藏
页码：775 / 778
页数：4
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